PARTICLES BEAM NUNDESTRUCTIVE DIAGNOSTICS

The electron miniaccelerator for the charged particles beam nondestructive diagnostics with operating voltage 200 kV, half-wave duration 4 mks and beam current within few mA is described. The primary circuit is switched by IGBT. The gun control and filament circuit power supply are performed through high frequency isolated transformer. The ac- celerating tube is performed from sectional welded metal ceramics insulator (ceramics 22 XC with diameter 95/85 mm). The accelerator test results are presented.

Andrey Aleksandrovich Korepanov: a.a.korepanov@inp.nsk.su

High intensity generator of electron current for the accelerators injector

The device for forming pulsed electron current for injection into accelerators was de- signed and realized. The pulse current duration is 0.5 ns and average electron current is from zero up to 110 mA. The charge of electron pulse is variable from zero up to 1.5 nC.

Evgeniy Ivanovich Kolobanov: S.S.Serednyakov@inp.nsk.su

I.Kuznetsov, M.I.Tiunov (Budker Institute of Nuclear Physics, Novosibirsk, Russia) 200 KEV PULSED ELECTRON BEAM SOURCE FOR THE VEPP-5 INJECTION COMPLEX The pulsed electron beam source on voltage 200 kV and current 10 A with half-height pulse duration 3 ns is described. The gun is based on the dispenser cathode with 20 mm diameter. The current control is performed by means of molybdenum grid with the cell size 0.4x0.4 mm and optical transparency of about 0.7. The numerical optimization of cathode-grid unit is carried out. The experimental results obtained are in good agreement with project parameters.